For Indian equity & F&O traders

You already know your P&L.
Do you know your actual tax bill?

Upload your Zerodha tradebook. In 60 seconds, Fynr finds every capital gains flag, every loss you should have booked, and every rupee you paid in avoidable tax — before your CA even opens the file.

Scan my tradebook — it's free See how it works

Works with Zerodha, Groww, Upstox, Angel One

Your file never leaves your browser

CA verification on every output

The problem

Most traders overpay.
Not because they're careless — because nobody told them.

The Indian tax code has rules that work in your favour — loss set-offs, LTCG exemptions, carry-forwards. But they don't apply automatically. Someone has to find them first.

You sold a losing position in April instead of March

That loss can't offset this year's gains anymore. It's not gone — it carries forward — but you paid tax you didn't have to. This happens to thousands of traders every year.

You held for 364 days and sold. The threshold was 365.

One day. The difference between 20% STCG and 12.5% LTCG. On a ₹5L gain that's ₹37,500 in avoidable tax. Your broker doesn't warn you. Your CA finds out after.

Your CA doesn't know which losses to offset against which gains

STCG losses can offset both STCG and LTCG gains. LTCG losses can only offset LTCG. Most CAs know this — but they need the right data at the right time. Most clients hand it over in March when it's too late to act.

You traded F&O and filed ITR-2. That's the wrong form.

F&O income is business income under Section 43(5), not capital gains. Filing the wrong ITR triggers scrutiny. It's a common mistake and an expensive one.

Real output

What Fynr finds in a real Zerodha tradebook

This is actual output from a 2,816-row Zerodha equity tradebook. 2,409 FIFO-matched lots. Processed in under 60 seconds.

BAJAJ-AUTO — ₹4,617 loss booked after year-end

Review

3 lots sold in April, missing the 31 March cut-off. Loss carries forward under Section 74 but couldn't offset this year's gains. Avoidable tax: ₹923.

OFSS — ₹3,383 loss booked after year-end

Review

1 lot sold on 10/4/2024. Had this been sold before 31 March it would have offset ₹3,383 of this year's gains. Avoidable tax: ₹677.

FEDERALBNK — ₹3,450 loss booked after year-end

Review

2 lots sold in April. Combined loss missed the FY cut-off. Avoidable tax: ₹690.

STCG of ₹5,79,293 across 124 scrips

Info

Short-term gains taxed at 20% (post Budget 2024). Estimated tax: ₹1,15,859. Your losses of ₹4,41,783 can offset these.

₹88,357 tax saving — offset losses against gains

Opportunity

₹4,41,783 in short-term losses offset ₹5,79,293 in gains under Section 70(2). Net taxable gain: ₹1,37,510.

~₹88,357 potential saving

₹1,25,000 LTCG exemption headroom remaining

Opportunity

Total LTCG is ₹0 — entire ₹1.25L exemption is unused. Book long-term gains before 31 March completely tax-free.

Up to ₹15,625 saveable before year-end

Scan summary

16 flags

Filetradebook-QS8452-EQ.xlsx

BrokerZerodha

Period2024-04-01 to 2025-03-31

Lots analysed2,409

STCG gains₹5,79,293

Realised losses₹4,41,783

Net after offset₹1,37,510

Tax saving identified₹88,357

Avoidable costs found₹7,771

Scan my tradebook →

How it works

Three steps. No signup required to scan.

Export your tradebook

Go to Zerodha Console → Reports → Tradebook → Download XLSX. Takes 30 seconds. Other brokers work too — Groww, Upstox, Angel One, ICICI Direct.

Drop it into Fynr

Drag and drop your file. Fynr runs FIFO matching on every trade, classifies gains and losses, and cross-checks the numbers — all in your browser. Nothing is uploaded to any server.

Read your report

You get a clean report: every flag sorted by severity, the Regret Engine showing what avoidable tax you paid, and a CA-ready summary your accountant can act on immediately.

Share with your CA (optional)

Connect with one of our partner CAs who already has context from your report. No re-explaining. No data entry. Just a filing conversation that starts from the right place.

What Fynr catches

Every flag that matters.
Automatically.

⚡

Window-closed losses

Losses sold after 31 March that missed the year-end offset window. Named, dated, and costed in rupees.

📅

Near-LTCG positions

Gains taxed at 20% STCG that were just days away from the 365-day LTCG threshold. Exact days short, exact extra tax paid.

₹

Loss harvesting opportunities

How much of your realised losses can offset your gains under Section 70. The exact tax saving, ready for your CA to apply.

🎯

LTCG exemption headroom

Unused ₹1.25L annual exemption before 31 March. How much more you can book in long-term gains completely tax-free.

⚠️

F&O ITR-3 requirement

Any F&O activity triggers ITR-3, not ITR-2. Fynr flags this immediately — wrong ITR form is a common and expensive mistake.

🔍

P&L maths check

Fynr independently recomputes your P&L from trade prices and flags discrepancies against your broker's reported numbers.

📦

Loss carry-forward tracking

Unabsorbed losses that carry forward for 8 years under Section 74 — and a reminder that a late ITR forfeits them.

📊

The Regret Engine

A plain-language breakdown of what each mistake actually cost you. Not just a flag — a rupee figure and a lesson for next year.

Pricing

Simple. Annual. No surprises.

One price. One financial year. Unlimited scans.

Free forever

Basic scan

₹0

No credit card needed

Full scan of your tradebook

All flags and opportunities

Regret Engine output

PDF export

Cross-year carry-forward tracking

CA workspace & sharing

Start scanning

The financial year ends 31 March.
Don't find out in April what you missed.

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You already know your P&L.Do you know your actual tax bill?

Most traders overpay.Not because they're careless — because nobody told them.

What Fynr finds in a real Zerodha tradebook

Three steps. No signup required to scan.

Every flag that matters.Automatically.

Simple. Annual. No surprises.

The financial year ends 31 March.Don't find out in April what you missed.

You already know your P&L.
Do you know your actual tax bill?

Most traders overpay.
Not because they're careless — because nobody told them.

Every flag that matters.
Automatically.

The financial year ends 31 March.
Don't find out in April what you missed.